From 32a5bf76cd232bb2ef7926e08a46c127fdc972e6 Mon Sep 17 00:00:00 2001
From: Thomas Harte <thomas.harte@gmail.com>
Date: Fri, 26 Sep 2025 12:06:44 -0400
Subject: [PATCH] Introduce a crop, centred on the pixel area.

---
 Machines/Acorn/BBCMicro/BBCMicro.cpp | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/Machines/Acorn/BBCMicro/BBCMicro.cpp b/Machines/Acorn/BBCMicro/BBCMicro.cpp
index 682f1263b..ca7d27287 100644
--- a/Machines/Acorn/BBCMicro/BBCMicro.cpp
+++ b/Machines/Acorn/BBCMicro/BBCMicro.cpp
@@ -288,7 +288,10 @@ public:
 	CRTCBusHandler(const uint8_t *const ram, SystemVIA &system_via) :
 		crt_(1024, 1, Outputs::Display::Type::PAL50, Outputs::Display::InputDataType::Red1Green1Blue1),
 		ram_(ram),
-		system_via_(system_via) {}
+		system_via_(system_via)
+	{
+		crt_.set_visible_area(crt_.get_rect_for_area(30, 256, 160, 800, 4.0f / 3.0f));
+	}
 
 	void set_palette(const uint8_t value) {
 		const auto index = value >> 4;